//package com.hydra.tool.security;
//
//import sun.misc.BASE64Decoder;
//import sun.misc.BASE64Encoder;
//
//import java.io.IOException;
//
///**
// * Created by GongZheng on 15/6/1 下午11:39.
// * Describe:
// */
//public class Base64 {
////    private static final char[] legalChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".toCharArray();
//
////    /**
////     * data[]进行编码
////     *
////     * @param data
////     * @return
////     */
////    public static String encode(byte[] data) {
////        int start = 0;
////        int len = data.length;
////        StringBuilder buf = new StringBuilder(data.length * 3 / 2);
////
////        int end = len - 3;
////        int i = start;
////        int n = 0;
////
////        while (i <= end) {
////            int d = ((((int) data[i]) & 0x0ff) << 16)
////                    | ((((int) data[i + 1]) & 0x0ff) << 8)
////                    | (((int) data[i + 2]) & 0x0ff);
////
////            buf.append(legalChars[(d >> 18) & 63]);
////            buf.append(legalChars[(d >> 12) & 63]);
////            buf.append(legalChars[(d >> 6) & 63]);
////            buf.append(legalChars[d & 63]);
////
////            i += 3;
////
////            if (n++ >= 14) {
////                n = 0;
////                buf.append(" ");
////            }
////        }
////
////        if (i == start + len - 2) {
////            int d = ((((int) data[i]) & 0x0ff) << 16)
////                    | ((((int) data[i + 1]) & 255) << 8);
////
////            buf.append(legalChars[(d >> 18) & 63]);
////            buf.append(legalChars[(d >> 12) & 63]);
////            buf.append(legalChars[(d >> 6) & 63]);
////            buf.append("=");
////        } else if (i == start + len - 1) {
////            int d = (((int) data[i]) & 0x0ff) << 16;
////
////            buf.append(legalChars[(d >> 18) & 63]);
////            buf.append(legalChars[(d >> 12) & 63]);
////            buf.append("==");
////        }
////
////        return buf.toString();
////    }
////
////    private static int decode(char c) {
////        if (c >= 'A' && c <= 'Z')
////            return ((int) c) - 65;
////        else if (c >= 'a' && c <= 'z')
////            return ((int) c) - 97 + 26;
////        else if (c >= '0' && c <= '9')
////            return ((int) c) - 48 + 26 + 26;
////        else
////            switch (c) {
////                case '+':
////                    return 62;
////                case '/':
////                    return 63;
////                case '=':
////                    return 0;
////                default:
////                    throw new RuntimeException("unexpected code: " + c);
////            }
////    }
////
////    /**
////     * Decodes the given Base64 encoded String to a new byte array. The byte
////     * array holding the decoded data is returned.
////     */
////
////    public static byte[] decode(String s) {
////
////        ByteArrayOutputStream bos = new ByteArrayOutputStream();
////        try {
////            decode(s, bos);
////        } catch (IOException e) {
////            throw new RuntimeException();
////        }
////        byte[] decodedBytes = bos.toByteArray();
////        try {
////            bos.close();
////        } catch (IOException ex) {
////            System.err.println("Error while decoding BASE64: " + ex.toString());
////        }
////        return decodedBytes;
////    }
////
////    private static void decode(String s, OutputStream os) throws IOException {
////        int i = 0;
////
////        int len = s.length();
////
////        while (true) {
////            while (i < len && s.charAt(i) <= ' ')
////                i++;
////
////            if (i == len)
////                break;
////
////            int tri = (decode(s.charAt(i)) << 18)
////                    + (decode(s.charAt(i + 1)) << 12)
////                    + (decode(s.charAt(i + 2)) << 6)
////                    + (decode(s.charAt(i + 3)));
////
////            os.write((tri >> 16) & 255);
////            if (s.charAt(i + 2) == '=')
////                break;
////            os.write((tri >> 8) & 255);
////            if (s.charAt(i + 3) == '=')
////                break;
////            os.write(tri & 255);
////
////            i += 4;
////        }
////    }
//
//    public static String encode(byte[] bytes) {
//        BASE64Encoder base64Encoder = new BASE64Encoder();
//        return base64Encoder.encode(bytes);
//    }
//
//    public static byte[] decode(String str) throws IOException {
//        BASE64Decoder base64Decoder = new BASE64Decoder();
//        return base64Decoder.decodeBuffer(str);
//    }
//}
